Performance and Safety Roundabouts with Traffic Signals

The paper presents design advantage and some drawbacks of various layouts of roundabouts with traffic signals, used in urban arterials on crossings with large traffic volumes. The authors analyze signal settings with alternative phasing used at intersections that can provide the intersection capacity of about 6,500 veh/h in 2x2 lanes arterials or even 8,000 veh/h in 2x3 lanes arterials. Accident statistics for roundabouts with traffic signals in Krakow are also given and discussed. In addition, presented are practical examples of changes of signalized roundabouts geometry; reconstruction into a form of turbo-roundabout and its effects regarding traffic safety and good performance.


  • English

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  • Accession Number: 01487628
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 27 2013 2:39PM